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configure.cmake
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configure.cmake
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#
# Configure checks
#
include(CheckCCompilerFlag)
include(CheckCSourceCompiles)
include(CheckIncludeFiles)
include(CheckStructHasMember)
include(CheckSymbolExists)
include(CheckTypeSize)
# Apple platforms like macOS/iOS allow targeting older operating system versions with a single SDK,
# the mere presence of a symbol in the SDK doesn't tell us whether the deployment target really supports it.
# The compiler raises a warning when using an unsupported API, turn that into an error so check_symbol_exists()
# can correctly identify whether the API is supported on the target.
check_c_compiler_flag("-Wunguarded-availability" "C_SUPPORTS_WUNGUARDED_AVAILABILITY")
if(C_SUPPORTS_WUNGUARDED_AVAILABILITY)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unguarded-availability")
endif()
if(HOST_SOLARIS)
set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DGC_SOLARIS_THREADS -DGC_SOLARIS_PTHREADS -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -DUSE_MMAP -DUSE_MUNMAP -DHOST_SOLARIS -D__EXTENSIONS__ -D_XPG4_2")
endif()
if(HOST_WASI)
set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WASI_EMULATED_SIGNAL -D_WASI_EMULATED_MMAN")
endif()
function(ac_check_headers)
foreach(arg ${ARGN})
check_include_file ("${arg}" FOUND_${arg})
string(TOUPPER "${arg}" var1)
string(REPLACE "/" "_" var2 ${var1})
string(REPLACE "." "_" var3 ${var2})
string(REPLACE "-" "_" var4 ${var3})
if (FOUND_${arg})
set(HAVE_${var4} 1 PARENT_SCOPE)
endif()
endforeach(arg)
endfunction()
function(ac_check_funcs)
foreach(arg ${ARGN})
check_function_exists ("${arg}" FOUND_${arg})
string(TOUPPER "${arg}" var1)
string(REPLACE "/" "_" var2 ${var1})
string(REPLACE "." "_" var3 ${var2})
if (FOUND_${arg})
set(HAVE_${var3} 1 PARENT_SCOPE)
endif()
endforeach(arg)
endfunction()
function(ac_check_type type suffix includes)
set(CMAKE_EXTRA_INCLUDE_FILES ${includes})
check_type_size(${type} AC_CHECK_TYPE_${suffix})
if (AC_CHECK_TYPE_${suffix})
string(TOUPPER "${type}" var1)
string(REPLACE "/" "_" var2 ${var1})
string(REPLACE "." "_" var3 ${var2})
string(REPLACE " " "_" var4 ${var3})
set(HAVE_${var4} 1 PARENT_SCOPE)
endif()
set(CMAKE_EXTRA_INCLUDE_FILES)
endfunction()
ac_check_headers (
sys/types.h sys/stat.h sys/filio.h sys/sockio.h sys/utime.h sys/un.h sys/syscall.h sys/uio.h sys/param.h
sys/prctl.h sys/socket.h sys/utsname.h sys/select.h sys/poll.h sys/wait.h sys/resource.h
sys/ioctl.h sys/errno.h sys/statvfs.h sys/statfs.h sys/mman.h sys/mount.h sys/time.h sys/random.h
strings.h stdint.h unistd.h signal.h setjmp.h syslog.h netdb.h utime.h semaphore.h alloca.h ucontext.h pwd.h elf.h
gnu/lib-names.h netinet/tcp.h netinet/in.h link.h arpa/inet.h unwind.h poll.h wchar.h
android/legacy_signal_inlines.h execinfo.h pthread.h pthread_np.h net/if.h dirent.h
CommonCrypto/CommonDigest.h dlfcn.h getopt.h pwd.h alloca.h
/usr/include/malloc.h)
ac_check_funcs (
sigaction kill clock_nanosleep backtrace_symbols mkstemp mmap
getrusage dladdr sysconf getrlimit prctl nl_langinfo
sched_getaffinity sched_setaffinity chmod lstat getdtablesize ftruncate msync
getpeername utime utimes openlog closelog atexit popen strerror_r inet_pton inet_aton
poll getfsstat mremap posix_fadvise vsnprintf statfs statvfs setpgid system
fork execv execve waitpid localtime_r mkdtemp getrandom execvp strlcpy stpcpy strtok_r rewinddir
vasprintf strndup getprotobyname getprotobyname_r getaddrinfo mach_absolute_time
gethrtime read_real_time gethostbyname gethostbyname2 getnameinfo getifaddrs
access inet_ntop Qp2getifaddrs getpid mktemp)
if (HOST_LINUX OR HOST_BROWSER)
# sysctl is deprecated on Linux and doesn't work on Browser
set(HAVE_SYS_SYSCTL_H 0)
else ()
check_include_files("sys/types.h;sys/sysctl.h" HAVE_SYS_SYSCTL_H)
endif()
check_include_files("sys/types.h;sys/user.h" HAVE_SYS_USER_H)
if(NOT HOST_DARWIN)
# getentropy was introduced in macOS 10.12 / iOS 10.0
ac_check_funcs (getentropy)
endif()
find_package(Threads)
# Needed to find pthread_ symbols
set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}")
ac_check_funcs(
pthread_getname_np pthread_setname_np pthread_cond_timedwait_relative_np pthread_kill
pthread_attr_setstacksize pthread_get_stackaddr_np
)
check_symbol_exists(madvise "sys/mman.h" HAVE_MADVISE)
check_symbol_exists(pthread_mutexattr_setprotocol "pthread.h" HAVE_DECL_PTHREAD_MUTEXATTR_SETPROTOCOL)
check_symbol_exists(CLOCK_MONOTONIC "time.h" HAVE_CLOCK_MONOTONIC)
check_symbol_exists(CLOCK_MONOTONIC_COARSE "time.h" HAVE_CLOCK_MONOTONIC_COARSE)
check_symbol_exists(sys_signame "signal.h" HAVE_SYSSIGNAME)
check_symbol_exists(pthread_jit_write_protect_np "pthread.h" HAVE_PTHREAD_JIT_WRITE_PROTECT_NP)
check_symbol_exists(getauxval sys/auxv.h HAVE_GETAUXVAL)
ac_check_type("struct sockaddr_in6" sockaddr_in6 "netinet/in.h")
ac_check_type("struct timeval" timeval "sys/time.h;sys/types.h;utime.h")
ac_check_type("socklen_t" socklen_t "sys/types.h;sys/socket.h")
ac_check_type("struct ip_mreqn" ip_mreqn "netinet/in.h")
ac_check_type("struct ip_mreq" ip_mreq "netinet/in.h")
ac_check_type("clockid_t" clockid_t "sys/types.h")
check_struct_has_member("struct sockaddr_in" sin_len "netinet/in.h" HAVE_SOCKADDR_IN_SIN_LEN)
check_struct_has_member("struct sockaddr_in6" sin6_len "netinet/in.h" HAVE_SOCKADDR_IN6_SIN_LEN)
check_struct_has_member("struct stat" st_atim "sys/types.h;sys/stat.h;unistd.h" HAVE_STRUCT_STAT_ST_ATIM)
check_struct_has_member("struct stat" st_atimespec "sys/types.h;sys/stat.h;unistd.h" HAVE_STRUCT_STAT_ST_ATIMESPEC)
if (HOST_DARWIN)
check_struct_has_member("struct objc_super" super_class "objc/runtime.h;objc/message.h" HAVE_OBJC_SUPER_SUPER_CLASS)
endif()
check_type_size("int" SIZEOF_INT)
check_type_size("void*" SIZEOF_VOID_P)
check_type_size("long" SIZEOF_LONG)
check_type_size("long long" SIZEOF_LONG_LONG)
check_type_size("size_t" SIZEOF_SIZE_T)
if (HOST_LINUX)
set(CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
endif()
check_c_source_compiles(
"
#include <string.h>
int main(void)
{
char buffer[1];
char c = *strerror_r(0, buffer, 0);
return 0;
}
"
HAVE_GNU_STRERROR_R)
check_c_source_compiles(
"
#include <sched.h>
int main(void)
{
CPU_COUNT((void *) 0);
return 0;
}
"
HAVE_GNU_CPU_COUNT)
if (HOST_LINUX OR HOST_ANDROID)
set(CMAKE_REQUIRED_DEFINITIONS)
endif()
check_c_source_compiles(
"
int main(void)
{
static __thread int foo __attribute__((tls_model(\"initial-exec\")));
return 0;
}
"
HAVE_TLS_MODEL_ATTR)
if (TARGET_RISCV32 OR TARGET_RISCV64)
check_c_source_compiles(
"
int main(void)
{
#ifdef __riscv_float_abi_double
#error \"double\"
#endif
return 0;
}
"
riscv_fpabi_result)
# check if the compile succeeded (-> not double)
if(riscv_fpabi_result EQUAL 0)
check_c_source_compiles(
"
int main(void)
{
#ifdef __riscv_float_abi_single
#error \"single\"
#endif
return 0;
}
"
riscv_fpabi_result)
# check if the compile succeeded (-> not single)
if(riscv_fpabi_result EQUAL 0)
check_c_source_compiles(
"
int main(void)
{
#ifdef __riscv_float_abi_soft
#error \"soft\"
#endif
return 0;
}
"
riscv_fpabi_result)
# check if the compile succeeded (-> not soft)
if(riscv_fpabi_result EQUAL 0)
message(FATAL_ERROR "Unable to detect RISC-V floating point abi.")
else()
set(RISCV_FPABI_SOFT 1)
endif()
else()
set(RISCV_FPABI_SINGLE 1)
endif()
else()
set(RISCV_FPABI_DOUBLE 1)
endif()
endif()
if(HOST_WIN32)
# checking for this doesn't work for some reason, hardcode result
set(HAVE_WINTERNL_H 1)
set(HAVE_CRYPT_RNG 1)
set(HAVE_GETADDRINFO 1)
set(HAVE_GETNAMEINFO 1)
set(HAVE_GETPROTOBYNAME 1)
set(HAVE_INET_NTOP 1)
set(HAVE_INET_PTON 1)
set(HAVE_STRUCT_SOCKADDR_IN6 1)
set(HAVE_STRTOK_R 1)
set(HAVE_EXECVP 0)
elseif(HOST_IOS)
set(HAVE_SYSTEM 0)
set(HAVE_SYS_USER_H 0)
set(HAVE_GETENTROPY 0)
if(HOST_TVOS)
set(HAVE_PTHREAD_KILL 0)
set(HAVE_KILL 0)
set(HAVE_SIGACTION 0)
set(HAVE_FORK 0)
set(HAVE_EXECV 0)
set(HAVE_EXECVE 0)
set(HAVE_EXECVP 0)
endif()
elseif(HOST_MACCAT)
set(HAVE_SYSTEM 0)
elseif(HOST_BROWSER)
set(HAVE_FORK 0)
elseif(HOST_SOLARIS)
set(HAVE_GETPROTOBYNAME 1)
set(HAVE_NETINET_TCP_H 1)
set(HAVE_GETADDRINFO 1)
elseif(HOST_WASI)
# Redirected to errno.h
set(SYS_ERRNO_H 0)
# Some headers exist, but don't compile (wasi sdk 12.0)
set(HAVE_SYS_SOCKET_H 0)
set(HAVE_SYS_UN_H 0)
set(HAVE_NETINET_TCP_H 0)
set(HAVE_ARPA_INET_H 0)
set(HAVE_MKDTEMP 0)
set(HAVE_EXECVE 0)
set(HAVE_FORK 0)
set(HAVE_GETRLIMIT 0)
set(HAVE_GETDTABLESIZE 0)
set(HAVE_MKSTEMP 0)
set(HAVE_BACKTRACE_SYMBOLS 0)
set(HAVE_GETPID 0)
set(HAVE_MACH_ABSOLUTE_TIME 0)
set(HAVE_GETHRTIME 0)
set(HAVE_READ_REAL_TIME 0)
set(HAVE_SCHED_GETAFFINITY 0)
set(HAVE_SCHED_SETAFFINITY 0)
set(HAVE_GETIFADDRS 0)
set(HAVE_GETADDRINFO 0)
set(HAVE_GETHOSTBYNAME 0)
set(HAVE_GETHOSTBYNAME2 0)
set(HAVE_GETPROTOBYNAME 0)
set(HAVE_GETNAMEINFO 0)
set(HAVE_INET_NTOP 0)
set(HAVE_SYS_ICU 0)
set(HAVE_EXECVP 0)
set(HAVE_MMAP 1)
set(DISABLE_PROFILER 1)
set(ENABLE_INTERP_LIB 1)
endif()